Where does s go /z/?

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Across
  1. 3. Las Vegas
  2. 5. Eye sight
  3. 6. To lift something
  4. 8. To refuse to something you want to do
  5. 9. Multiple homes
Down
  1. 1. A change that you go through
  2. 2. Switching classes
  3. 3. A Disney character
  4. 4. A red beam
  5. 7. To blame someone